A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 12 subjects had a mean wake time of 96.1 min and a standard deviation of 40.1 min. Assume that the 12 sample values appear to be from a normally distributed population and construct a 95 % confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. FInd the confidence interval estimate: ______min<0<_____min (round to 2 decimal places as needed)
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 12 subjects had a mean wake time of 96.1 min and a standard deviation of 40.1 min. Assume that the 12 sample values appear to be from a
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